Finding the Fourth Proportional to 21,523.89, 29,702.79 and 12,092.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,523.89 : 29,702.79 = 12,092.25 : x
2. Step 2: Convert to fraction form
   21,523.89/29,702.79 = 12,092.25/x
3. Step 3: Cross multiply
   21,523.89x = 29,702.79 × 12,092.25
4. Step 4: Simplify right side
   21,523.89x = 359,173,562.38
5. Step 5: Solve for x
   x = 359,173,562.38/21,523.89
6. Step 6: Final answer
   x = 16,687.20